Panasonic CT-27HL15N Service-Handbuch - Seite 4

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Put the iron wire under the pins of the Flat IC and pull it in the direction indicated while heating the pins using a soldering iron. A

small awl can be used instead of the iron wire.

Remove the solder from all the pads of the Flat IC by using a de solder braid

Position the new Flat IC in place (apply the pins of the Flat IC to the soldering pads where the pins need to be soldered). Properly

determine the positions of the soldering pads and pins by correctly aligning the polarity symbol

Solder all pins to the soldering pads using a fine tipped soldering iron

Check with a magnifier for solder bridge between the pins or for dry joint between pins and soldering pads. To remove a solder

bridge, use a de solder braid as shown in the figure below

IMPORTANT

To protect against possible damage to the solid state devices due to arching or static discharge, make certain that all ground wires and

CRT DAG wire are securely connected.

CAUTION

The power supply circuit is above earth ground and the chassis cannot be polarized. Use an isolation transformer when servicing the

receiver to avoid damage to the test equipment or to the chassis. Connect the test equipment to the proper ground (hot) or (cold) when

servicing, or incorrect voltages will be measured.

WARNING

This receiver has been designed to meet or exceed applicable safety and x-ray radiation protection as specified by government

agencies and independent testing laboratories.

To maintain original product safety design standards relative to x-ray radiation and shock and fire hazard, parts indicated with the

symbol on the schematic must be replaced with identical parts. Order parts from the manufacturer's parts center using the parts

numbers shown in this service manual, or provide the chassis number and the part reference number.

For optimum performance and reliability, all other parts should be replaced with components of identical specification.

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7/7/2008